Section 16 MACHINERY AND MECHANICAL APPLIANCES; ELECTRICAL EQUIPMENT; PARTS THERE OF; SOUND RECORDERS AND REPRODUCERS, TELEVISION IMAGE AND SOUND RECORD ERS AND REPRODUCERS, AND PARTS AND ACCESSORIES OF SUCH ARTICLES 84 Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof 84 15 Air conditioning machines, comprising a motor-driven fan and elements for changi 84 15 81 84 15 81 00 Commodity Code Description 84 15 81 00 00 -- Incorporating a refrigerating unit and a valve for reversal of the cooling/heat cycle